/***********
给出一个不多于5位的正整数，要求，1 求它是几位数，2 分别打印出每一位数字；3逆向打印出个数字
*************/
#include <stdio.h>
int main(int argc, char *argv[])
{
int num;
int indiv, ten, hundred, thousand;
int ten_thousand, hundred_thousand,place;
printf("请输入一个整数（0~999999）：");
scanf("%d",&num);
if(num > 99999)
place = 6;
else if(num > 9999)
place = 5;
else if(num > 999)
place = 4;
else if (num > 99)
place = 3;
else if(num > 9)
place = 2;
else place = 1;
printf("place = %d", place);
printf("每位数字：");
hundred_thousand = num/100000;
ten_thousand = (num - hundred_thousand*100000)/10000;
thousand = (num - hundred_thousand*100000-ten_thousand*10000)/1000;
hundred = (num - hundred_thousand*100000-ten_thousand*10000-thousand*1000)/100;
ten = (num - hundred_thousand*100000-ten_thousand*10000-thousand*1000-hundred*100)/10;
indiv = num - hundred_thousand*100000-ten_thousand*10000-thousand*1000-hundred*100-ten*10;
switch(place)
{ case 1:printf("%d", indiv);
printf("\n反序数字为：");
printf("%d\n",indiv);
break;
case 2:printf("%d,%d", ten, indiv);
printf("\n反序数字为：");
printf("%d%d\n",indiv, ten);
break;
case 3:printf("%d,%d,%d",hundred, ten, indiv);
printf("\n反序数字为：");
printf("%d%d%d\n",indiv, ten, hundred);
break;
case 4:printf("%d,%d,%d,%d", thousand, hundred,ten,indiv);
printf("\n反序数字为：");
printf("%d%d%d%d\n",indiv,ten,hundred,thousand);
break;
case 5:printf("%d,%d,%d,%d,%d", ten_thousand,thousand,hundred,ten,indiv);
printf("\n反序数字为：");
printf("%d%d%d%d%d\n",indiv,ten,hundred,thousand,ten_thousand);
break;
case 6:printf("%d,%d,%d,%d,%d,%d",hundred_thousand,ten_thousand,thousand,hundred,ten,indiv);
printf("\n反序数字为：");
printf("%d%d%d%d%d%d\n",indiv,ten,hundred,thousand,ten_thousand,hundred_thousand);
break;
default:printf("NOT FIND.\n");
break;
}
while(1);
return 0;
}
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